# 数控计算 vs TriCalc

The clearest difference is price: TriCalc at Free against 数控计算's $3.99. 数控计算's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

TriCalc is free to download; 数控计算 costs $3.99 up front. TriCalc sells 1 one-off in-app purchase. 数控计算 asks for nothing beyond the download.

数控计算 ships an update every 2 weeks, TriCalc fortnightly. The most recent releases landed on October 13, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 数控计算 | TriCalc |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Paid | — |
| Size | 54 MB | 23 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Miyouguo Technology Co., Ltd.](https://appshunter.io/developer/1483409110) | [Keita Ogasawara](https://appshunter.io/developer/1524965899) |

## What reviewers say

### 数控计算

[App page](https://appshunter.io/ios/app/id1483409111)

This app assists CNC lathe programmers and machinists with complex calculations and program generation for various threading, grooving, and taper operations. It offers a comprehensive suite of tools to improve efficiency and accuracy in mechanical processing.

**Highlights:** Macro program generation (threading, grooving), Thread machining programs (metric, unified, pipe), Taper calculations and conversions, Chamfer and corner calculations, Tolerance lookup for shafts and holes, Arc tangent point calculation, Various trigonometric functions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TriCalc

[App page](https://appshunter.io/ios/app/tricalc-triangle-solver/id6762830339)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is 数控计算 free?

数控计算 costs $3.99, with no in-app purchases.

### Is TriCalc free?

TriCalc is free to download, with in-app purchases available.

### Do 数控计算 or TriCalc have ads?

TriCalc shows ads; 数控计算 does not.

### Which is updated more often, 数控计算 or TriCalc?

数控计算 ships an update every 2 weeks, and TriCalc fortnightly. Most recently, 数控计算 was updated on October 13, 2026 and TriCalc on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*